Question

To determine the fineness of cement ____

(a) Grain size is smaller than specified mesh size

(b) Grain size is larger than specified mesh size

(c) Grain size is equal to specified mesh size

(d) Grain size is 1mm

I had been asked this question at a job interview.

This intriguing question comes from Testing of Cement topic in section Types of Cement and Testing of Cement of Concrete Technology

Answer 1

The correct answer is (b) Grain size is larger than specified mesh size

Easiest explanation: To determine the fineness of cement by dry sieving as per IS: 4031 (Part 1) – 1996. The principle of this is that we determine the proportion of cement whose grain size is larger than the specified mesh size.